I was going the cheap route with a Transgo AODE-3 Full Manual Kit for $209. Then Try to make my own relays.
I found this FB pic. It helps me somewhat. I think with more info I could make it myself for under $50. It says 8 pack relay but only shows 6, and I will not be using a transbrake. I don't understand from that pic how to wire the relays because the pic only show 1 or 2 wires going to what I think are the relays, but relays have 4-5 connections.